/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: #0d1117;
  color: #e6edf3;
  line-height: 1.6;
}

/* Color Variables */
:root {
  --primary: #3b82f6;
  --background-dark: #0d1117;
  --foreground-dark: #e6edf3;
  --foreground-dark-muted: #8b949e;
  --card-dark: #1f2937;
  --subtle-dark: #1f2937;
  --gray-100: #f3f4f6;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-600: #4b5563;
  --gray-800: #1f2937;
  --gray-900: #111827;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: rgba(13, 17, 23, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #374151;
  z-index: 50;
}

.navbar-container {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1rem;
}

.navbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
}

.navbar-brand {
  font-size: 1.25rem;
  font-weight: bold;
  color: var(--foreground-dark);
}

.navbar-nav {
  display: none;
  align-items: center;
  gap: 2rem;
}

.navbar-nav.show {
  display: flex;
}

.nav-link {
  color: var(--foreground-dark);
  text-decoration: none;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}

.mobile-menu-button {
  display: block;
  color: var(--foreground-dark);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-button:hover {
  color: var(--primary);
}

.mobile-menu {
  display: none;
  background-color: var(--background-dark);
  border-top: 1px solid #374151;
  padding: 0.5rem 0;
}

.mobile-menu.show {
  display: block;
}

.mobile-menu .nav-link {
  display: block;
  padding: 0.75rem 1rem;
  font-size: 1rem;
}

/* Sections */
.section {
  scroll-margin-top: 80px;
}

/* Home Section */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  width: 100%;
  padding: 1rem;
  text-align: center;
}

.hero-content {
  width: 100%;
  max-width: 56rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-title {
  font-size: 3rem;
  font-weight: 900;
  color: var(--gray-100);
  letter-spacing: -0.025em;
  line-height: 1;
}

.hero-subtitle {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary);
}

.hero-description {
  font-size: 1.125rem;
  color: var(--gray-400);
  max-width: 32rem;
  margin: 0 auto;
  line-height: 1.75;
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  justify-content: center;
  align-items: center;
  margin-top: 2rem;
}

.hero-button {
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  display: inline-block;
}

.hero-button-primary {
  background-color: var(--primary);
  color: white;
}

.hero-button-primary:hover {
  background-color: #2563eb;
}

.hero-button-secondary {
  border: 1px solid var(--gray-600);
  color: var(--gray-300);
}

.hero-button-secondary:hover {
  background-color: var(--gray-800);
}

.hero-social {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.social-link {
  color: var(--gray-400);
  transition: color 0.3s ease;
}

.social-link:hover {
  color: var(--primary);
}

.social-icon {
  width: 1.5rem;
  height: 1.5rem;
}

/* About Section */
.about {
  padding: 4rem 1rem;
}

.about-container {
  max-width: 56rem;
  margin: 0 auto;
}

.about-header {
  text-align: center;
  margin-bottom: 3rem;
}

.about-title {
  font-size: 2.25rem;
  font-weight: bold;
  color: var(--foreground-dark);
  margin-bottom: 1rem;
}

.about-subtitle {
  font-size: 1.125rem;
  color: var(--foreground-dark-muted);
}

.about-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3rem;
}

.about-image {
  width: 12rem;
  height: 12rem;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.about-text {
  flex: 1;
}

.about-name {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--foreground-dark);
  margin-bottom: 0.5rem;
}

.about-role {
  font-size: 1.125rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.about-location {
  font-size: 1rem;
  color: var(--foreground-dark-muted);
  margin-bottom: 1.5rem;
}

.about-description {
  color: rgba(230, 237, 243, 0.8);
  margin-bottom: 1rem;
}

/* Experience Section */
.experience {
  padding: 4rem 1rem;
  background-color: rgba(17, 24, 39, 0.5);
}

.experience-container {
  max-width: 56rem;
  margin: 0 auto;
}

.experience-header {
  text-align: center;
  margin-bottom: 3rem;
}

.experience-title {
  font-size: 2.25rem;
  font-weight: bold;
  color: var(--foreground-dark);
  margin-bottom: 1rem;
}

.experience-subtitle {
  font-size: 1.125rem;
  color: var(--foreground-dark-muted);
}

.timeline {
  position: relative;
}

.timeline-line {
  position: absolute;
  left: 1.5rem;
  top: 0;
  height: 100%;
  width: 2px;
  background-color: rgba(142, 149, 158, 0.2);
}

.timeline-item {
  position: relative;
  padding-left: 3rem;
  margin-bottom: 3rem;
}

.timeline-icon {
  position: absolute;
  left: 0;
  top: 0.375rem;
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--foreground-dark);
  margin-bottom: 0.5rem;
}

.timeline-date {
  font-size: 0.875rem;
  color: var(--foreground-dark-muted);
  margin-bottom: 1rem;
}

.timeline-description {
  color: rgba(230, 237, 243, 0.8);
}

.timeline-description ul {
  list-style-type: disc;
  padding-left: 1.25rem;
  margin-top: 1rem;
}

.timeline-description li {
  margin-bottom: 0.5rem;
}

.download-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  background-color: var(--primary);
  color: white;
  text-decoration: none;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 1.125rem;
  box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.2);
  transition: all 0.2s ease;
  margin: 4rem auto 0;
  max-width: fit-content;
}

.download-button:hover {
  transform: scale(1.05);
}

/* Projects Section */
.projects {
  padding: 4rem 1rem;
}

.projects-container {
  max-width: 80rem;
  margin: 0 auto;
}

.projects-header {
  text-align: center;
  margin-bottom: 3rem;
}

.projects-title {
  font-size: 2.25rem;
  font-weight: bold;
  color: white;
  margin-bottom: 1rem;
}

.projects-subtitle {
  font-size: 1.125rem;
  color: var(--gray-400);
}

.projects-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.project-card {
  background-color: var(--card-dark);
  border-radius: 0.75rem;
  overflow: hidden;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.project-card:hover {
  box-shadow: 0 25px 50px -12px rgba(59, 130, 246, 0.2);
}

.project-image {
  height: 14rem;
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.project-image.green {
  background: linear-gradient(135deg, #059669, #2563eb);
}

.project-image.red {
  background: linear-gradient(135deg, #dc2626, #ea580c);
}

.project-image.purple {
  background: linear-gradient(135deg, #7c3aed, #ec4899);
}

.project-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  color: white;
}

.project-icon-title {
  font-size: 1.25rem;
  font-weight: bold;
  color: white;
  text-align: center;
}

.project-content {
  padding: 1.5rem;
}

.project-title {
  font-size: 1.25rem;
  font-weight: bold;
  color: white;
  margin-bottom: 0.5rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.project-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
  background-color: rgba(59, 130, 246, 0.1);
  color: #93c5fd;
}

.project-description {
  color: var(--gray-400);
  margin-top: 1rem;
}

/* Contact Section */
.contact {
  padding: 4rem 1rem;
  background-color: rgba(17, 24, 39, 0.5);
}

.contact-container {
  max-width: 56rem;
  margin: 0 auto;
}

.contact-header {
  text-align: center;
  margin-bottom: 3rem;
}

.contact-title {
  font-size: 2.25rem;
  font-weight: bold;
  color: var(--foreground-dark);
  margin-bottom: 1rem;
}

.contact-subtitle {
  font-size: 1.125rem;
  color: rgba(230, 237, 243, 0.8);
  line-height: 1.75;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.contact-info {
  background-color: rgba(31, 41, 55, 0.5);
  padding: 2rem;
  border-radius: 0.5rem;
  border: 1px solid var(--subtle-dark);
}

.contact-info h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--foreground-dark);
  margin-bottom: 0.75rem;
}

.contact-info p {
  color: rgba(230, 237, 243, 0.8);
  margin-bottom: 2rem;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--foreground-dark);
  text-decoration: none;
  transition: color 0.3s ease;
}

.contact-link:hover {
  color: var(--primary);
}

.contact-link-icon {
  width: 1.5rem;
  height: 1.5rem;
}

.contact-form {
  background-color: rgba(31, 41, 55, 0.5);
  padding: 2rem;
  border-radius: 0.5rem;
  border: 1px solid var(--subtle-dark);
}

.contact-form h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--foreground-dark);
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--subtle-dark);
  border-radius: 0.5rem;
  background-color: var(--subtle-dark);
  color: var(--foreground-dark);
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input::placeholder {
  color: rgba(230, 237, 243, 0.5);
}

.form-textarea {
  resize: vertical;
  min-height: 6rem;
}

.form-button {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--primary);
  color: white;
  border: none;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.form-button:hover {
  background-color: #2563eb;
}

.form-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-button.success {
  background-color: #059669;
}

.form-button.error {
  background-color: #dc2626;
}

/* Footer */
.footer {
  background-color: var(--background-dark);
  border-top: 1px solid #374151;
  padding: 2rem 0;
}

.footer-container {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1rem;
  text-align: center;
}

.footer-text {
  color: var(--foreground-dark-muted);
}

/* Responsive Design */
@media (min-width: 640px) {
  .hero-buttons {
      flex-direction: row;
  }

  .hero-title {
      font-size: 3.75rem;
  }

  .hero-subtitle {
      font-size: 1.875rem;
  }

  .hero-description {
      font-size: 1.25rem;
  }
}

@media (min-width: 768px) {
  .navbar-nav {
      display: flex;
  }

  .mobile-menu-button {
      display: none;
  }

  .about-content {
      flex-direction: row;
  }

  .contact-grid {
      grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .hero-title {
      font-size: 4.5rem;
  }

  .projects-grid {
      grid-template-columns: repeat(2, 1fr);
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.hidden {
  display: none;
}

.show {
  display: block;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}